GB191221008A - Improvements in Controlling Apparatus for Telephone Systems using Automatic Selector Switches. - Google Patents

Improvements in Controlling Apparatus for Telephone Systems using Automatic Selector Switches.

Info

Publication number
GB191221008A
GB191221008A GB191221008DA GB191221008A GB 191221008 A GB191221008 A GB 191221008A GB 191221008D A GB191221008D A GB 191221008DA GB 191221008 A GB191221008 A GB 191221008A
Authority
GB
United Kingdom
Prior art keywords
relay
selector
relays
circuit
over
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Other languages
English (en)
Inventor
Edward Charles Molina
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of GB191221008A publication Critical patent/GB191221008A/en
Expired legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change

Landscapes

  • Exchange Systems With Centralized Control (AREA)
  • Relay Circuits (AREA)
GB191221008D 1911-09-14 1912-09-14 Improvements in Controlling Apparatus for Telephone Systems using Automatic Selector Switches. Expired GB191221008A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US191221008XA 1911-09-14 1911-09-14

Publications (1)

Publication Number Publication Date
GB191221008A true GB191221008A (en) 1913-04-24

Family

ID=32394226

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191221008D Expired GB191221008A (en) 1911-09-14 1912-09-14 Improvements in Controlling Apparatus for Telephone Systems using Automatic Selector Switches.

Country Status (3)

Country Link
DE (1) DE264532C (https=)
GB (1) GB191221008A (https=)
NL (1) NL1516C (https=)

Also Published As

Publication number Publication date
DE264532C (https=) 1913-09-25
AU634512B (en) 1912-09-17
NL1516C (nl) 1916-09-15

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